This Life of Fred books covers Real Analysis, a topic studied by math majors in college. This math is more advanced than what most non-majors ever see, but it still has Fred, and he has a very good time with his favorite topic. Real Analysis is the study of real numbers, functions using the real numbers, and the properties of the real numbers and their functions. It is heavy on theorems and proofs.
 
Calculus is a requirement before studying this topic, and Life of Fred: Five Days is recommended.Topics include:The Real NumbersSequencesSeriesTests for Series ConvergenceLimits and ContinuityDerivativesThe Riemann IntegralSequences of FunctionsSeries of FunctionsTwo Cow-Moving TheoremsLooking Ahead to Topics beyond a First Course in Real Analysis.